Combination lifting, platform, handtruck, scaffold, floorjack and mechanic cleeper

ABSTRACT

A combination lifting, platform, tilt back hand truck, scaffold, work buget, floor jack and mechanic&#39; cleeper is disclosed. The combination is a portable and foldable unit, that converts in to a tilt back hand truck having two wheels or six wheels that having, a lift table having extensible legs, and extensible tilter device, a platform having flexible combination support plate, and approach lamp. This combination also provides coupling device such as pocket and bracket, which can be coupled to a plurality of space attachments for multiple purposes such as scaffold, work buget, floor jack, mechanic&#39; cleeper.

RELATED APPLICATION

[0001] Reference is make to my provisional application No. 60/228,577

[0002] File Aug. 29, 2000 entitled “combination lifting and card”

BACK GROUND OF INVENTION

[0003] 1. Field of Invention

[0004] This invention relates in general to a multi-use portablelifting, and more specifically, the invention discloses how a portablelifting can be convert into a tilt back hand truck, a regular handtruck, a scaffold, a floor jack or a mechanic' cleeper.

[0005] 2. Description of Prior Art

[0006] Various combination of lifting and moving devices have been knownin the past.

[0007] U.S. Pat. No. 4,258,826 to Murray, disclosing a hand cart thatcan be convert to stepladder and further disclosing a winch type thatcan raise a load to a higher level.

[0008] U.S. Pat. No. 3,751,058 to Lasen discloses a combination showshovel, wheel barrow and dolly.

[0009] U.S. Pat. No. 6,173,881 to Dean Tonabene, discloses combinationhand truck, stepladder and basket carrier.

[0010] U.S. Pat. No. 6,189,653 to Laug Horst discloses multi-purposescaffold.

[0011] U.S. Pat. No. 4,949,626 to Dale a. ast discloses combinationstepladder and hand truck apparatus.

[0012] U.S. Pat. No. 4,488,326 to Chales w. chery, discloses pallet docklift.

[0013] What is needed is a combinations lifting, platform, tilt backhand truck, scaffold, floor jack and mechanic' cleeper. None of theabove patent describe the present invention.

OBJECTS AND ADVANTAGES

[0014] (a) One object of this invention is to provide a combinationlifting, platform, tilt back hand truck, work buget, scaffold andmechanic's creeper apparatus which is readily convertible from a compactlift table structure into a rigid multipurpose tool structure.

[0015] (b) To provide the combination of tool simple inexpensive tomanufacture, operate and maintain.

[0016] (c) To provide a closure which can be use by consumers, withoutspecial tools or training.

[0017] (d) To provide a tool that can complete work from start to finishwith out the need for transfer the load from one device to another thatmay cause injury.

[0018] (e) To provide a closure which can be achieved by consumerswithout the use of a big vehicle to delivery a load because thisinvention is compact and light weight, using only a small amount ofstorage compared to the previous product, this invention can helpconsumers and business' save money which would other wise be spent onthe high cost of gasoline.

[0019] (f) A combination which all the load are rested on extensibletilter device and front scissor legs when the lift table elevate thenthe load will rested on scissor legs which provide different functionfrom previous invention.

[0020] (g) Another object of this invention is having a new and novel isto provide a combination lift table, tilt-back and hand truck which canbe delivered from the ground both load and combination lifting platformit self to different level such as truck with out using high cost dock,fork lift by converted and transfer weight from lift table position totilt-back six-wheeler (climb up) and continue moving the load all theway in side the truck bed where folk lift unable to reach.

[0021] (h) A combination of support plate and approach ramp, providing apivotally inserted support plate member which normally caries a loadwhen used as a hand truck. It can move upward and lock in placeproviding a compact structure for storage. it can also be suspended andlowered to the ground, docked and used as a platform. Unlike the otherprevious product this mechanism can be used as a scaffold, work bugetand be used as a creeper and floor jack.

[0022] (I) Another advantage of this invention is the lift assemblymechanism can be folded for more compact and coupling to rear portion ofthe lift table provide the maximum lowest point to the ground alsosupport plate in lower position and converted to platform make itpossible to roll load in and out also when attach with hand crank pusherwheel the platform and support plate can move slidable beneath manystags of boxes in one pass.

[0023] (j) It can be elevated to the desired high and used the supportplate which pick up the load from the truck or dock.

[0024] (k) To provide a lighter product in weight than what alreadyknown by using light weight. swivel wheel which can be rotate and use asa stop instead of using lower frame assembly also the scissor legs aremade of steel or aluminium square tube instead of heavy steel bare andusing combination extend legs and reinforce legs only when need morestrength for lifting on heavier load.

[0025] (l) Provided multiple function attachments which can be coupled,using the same coupling device such as pocket, brackets and locking pin.

[0026] (m) Multipurpose scaffold and stepladder provide lifting loads,tools, lumber, heavy loads and work in side or out side building. It isconvenient when used with remote control and tilted parallel with theceiling, roof, pole, or work place for more convenient with newfunction.

[0027] (n) A work buget is can be carries, liquid, rock and sand. it canbe lower to the ground and roll in and out load also elevate tilting anddumping the load.

[0028] (o) Further objective and advantages is to mark it easier for theuser to carry and transport cargo when the structure is in the handtruck usage.

[0029] (p) A mechanic's cleeper can be tilted enabling a labourer towork face down and closer to the work place. It can be elevated andlowered to accesses work place that are hard to reach.

[0030] (q) A mechanic's deeper work as seat supports a worker an uprightor set tool box at the same time also elevate tool box at desire levelfor work condition.

[0031] (r) Other advance is the floor jack which load or unloadautomotive parts, large size spare tires, raise and align the vehicle atthe same time.

[0032] (s) Supply's an incline for fast convenient loading and unloadingwith less effort.

[0033] (t) Using only a single lift drive to tilting, lifting loweringand declining with out additional hydraulic device or otherdrive/control devices.

[0034] (u) The combination available in different size and selection fordifferent use.

DRAWING FIGURES

[0035]FIG. 1A is a side elevational view of the lift table in accordancewith this invention shown in a lowered transport condition with aremovable extensible bar attached on lower cross beam and platform;

[0036]FIG. 1B is a side elevational view of the lift table in anelevated position;

[0037]FIG. 1C is a left end view of the right shown in FIG. 1A;

[0038]FIG. 1D is a left end view of the right shown in FIG. 1B;

[0039]FIG. 1E is a removed sectional view of extensible bar and tilterdevice;

[0040]FIG. 1F is side view of manually hand crank lift assembly;

[0041]FIG. 1G is side view of hydraulic lift assembly;

[0042]FIG. 1H is a side view of the embodiment of FIG. 1G, showing ahydralic lift assembly in a lowered position;

[0043]FIG. 1I is a top view of FIG. 1B in its elevated position;

[0044]FIG. 1J is an enlarged partial sectional view of the combinationsupport plate and approach ramp also support plate channel taken alongthe line 1J-1J in FIG. 1I;

[0045]FIG. 1K is an enlarged partial sectional view of the support platechannel locking mechanism take along the line 1K-1K in FIG. 1I;

[0046]FIG. 1L is an enlarged partial sectional view of the combinationsupport plate approach ramp and support plate locking mechanism takealong the line 1L-1L in FIG. 1I;

[0047]FIG. 1M is an enlarged partial section view of the combinationsupport plate approach ramp and support plate channel take along theline 1M-1M in FIG. 1I;

[0048]FIG. 1N is a partial exploded perspective view of a combinationextended legs and reinforce legs with wheel assembly;

[0049]FIG. 1O is a partial exploded perspective view of a combinationextended legs and reinforce legs with cross beam;

[0050]FIG. 1P is an enlarged partial view of the swivel wheels assemblytaking along the line 1P-1P in FIG. 11;

[0051]FIG. 1Q is a sectional view of the swivel wheels assembly takingalong the line 1Q-1Q in FIG. 1P;

[0052]FIG. 1R is an enlarged partial section view the pivot pin assemblytaking along the line 0 IR-IR in FIG. 1A;

[0053]FIG. 1S is a sectional view of the pivot pin assembly taking alongthe line IS-IS in FIG. 1R;

[0054]FIG. 1T is a is an enlarge partial sectional view similar to FIG.1M except showing the support plate in lowered to the floor level;

[0055]FIG. 2A is a side view of the lift table in accordance withinvention shown in a lowered. transport condition with a removableextensible bar attached on upper cross beam and platform cross beam;

[0056]FIG. 2B is a side elevtional view of the lift table in an elevatedposition;

[0057]FIGS. 2C through 2F are side views of the lift table with a titterdevice, showing use thereof,

[0058]FIG. 3A is a side view of the lift table shown in lowered to thefloor level and lifting stackers;

[0059]FIG. 3B is a side view of the lift table in an elevated position;

[0060]FIG. 3C is side view of Hand crank pusher wheel;

[0061]FIG. 3D shown in the hand truck usage condition or standard twowheeler;

[0062]FIG. 4A is a side view of the lift table in use as a stepladder;

[0063]FIG. 4B is a side view of the lift table in use as a multi-purposescaffold;

[0064]FIGS. 5A and 5B are views of the lift table in use as amulti-purpose work buget;

[0065]FIGS. 6A and 6B are side views of the lift table in use as amechanic's creeper;

[0066]FIGS. 6C and 6D are side view and topview of the lift table in useas a automotive floor jack;

SUMMERY OF INVENTION

[0067] It is the object of present invention is to provide a combinationlifting, platform, tilt back hand truck, scaffold, work buget, floorjack, and mechanic' cleeper which, is readily convertible from a lifttable into a tilt back hand truck, or readily convertible from a lifttable in to scaffold or readily convertible from a scaffold to any ofthe above mentioned functions.

[0068] Another objective of the present invention is to provide pocket,bracket, extension legs, extensible bar and pin holes to couple to avariety of different devices to achieve different function results in annew product which provides a function that used both the lift tableaspect and the modified or add on function aspect to provide resultssuperior to the sum of using separate device to perform the two functionwhen perform two function or more than two function, such as provide atilt back hand truck which can be delivered from the ground both loadand combination lifting platform it self to different level such astruck bed by converted and transfer weight from lift table position tosupport plate or tilt back six wheeler then convert to hand truck twowheeler and continue move the load all the way inside the truck bed allon the same modified lift table and without the need for transfer of theload from one device to another device. without additional hydrauliccylinders or other drive/control devices.

DESCRIPTION—FIGS.1 TO 6D

[0069]FIGS. 1B and 1D. depict a scissors-type hydraulically-driven orscrew thread-driven, liftable 10 (FIGS. 1F-1H lift assembly will bedescribed in more detail later).Two pair of scissors legs 15 a, 15 b, 15c, 15 d, made of steel or aluminium tube are mounted at a first end,e.g., using pivot pin 16 a, 16 b, (between cross bare 42 d) to both sideof upper support frame 17 a, 17 b, and pivot to both front wheel 18 a,18 b, (between cross bar 42 c) to lower portion of the scissors legs theupper support frame include platform cross frame 17, a 17 b, and deck11. The opposite ends of the scissors are coupled to rollers 16 c and 16d and swivel wheels assembly 18 c, 18 d, FIG. 1P to lower portion ofscissors legs as part of scissors motion describe below, are free tomove along horizontal surfaces of wheel 18 a, 18 b, swivel wheels 18 c,18 d, FIG. 1P. the first pair of legs 15 a, 15 b pivotally coupled,defining a scissors pivot pin 12 a, 12 b (pivot axis) and the secondpair of 15 c, 15 d are pivotally coupled at the same axis 12 a or pin 12b, a drive or motive device such as a hand operated hydraulic pump orother control may be provided for extending or retracting the cylinder13 and cylinder rod 14 other drive or motive device are screwthread-driven witch may be by hand cranks, power by electric hand drillor power by an electric or air. Energy for screw thread-driven may beprovided from an on-board battery and/or from an electric power via acable (not shown).optionally, a switch or other control may be providedsuch as remote control (not shown). In the depict embodiment, thecylinder 13 is pivotally coupled at one end to pivot pin 29 and the liftarm 23, extending between ball joint 26 and bracket 34 d mounted at thecenter of cross bar 42 b with connected to the scissors legs 15 a, 15 dand pivot pin 25 (pivot axis) mounted to lift arm 22 and pivotallycoupled at the opposite end, to the cross bar 22, extending between balljoint 24 and bracket 34 c are mounted at a center of lower cross barconnect to the scissors legs 15 b, 15 c and pivot pin 25 (pivot axis),when the hydraulic cylinder 13, rod14 and support rod 27 are extendedcause lift arms 22 and 23 to spread apart pushing the cross bare 42 band platform 10 upward in FIGS. 1B, 1D, 1G, and when the hydrauliccylinder 13 is retract cause the lift arm 23 to lowering the cross bar41 and platform assembly to lower. Best seen in FIGS. 1H, 3A,

[0070] In the depicted embodiments of FIGS. 1A, 1B, the rear deck crossbar 41 attached to bracket 55 a, 55 b, by welted and extend is pivotallyat one end to a rod 50 and extensible tilter device 40 by adjusting pin54 inserted in holes 200 a 200 b 200 c 200 d and device 40 is rested onbracket 51 and attached by pin 53 to cross bare 42 the lower end ofscissors legs 15B, 15C (1E) when the hydraulic cylinder 13 retract causethe front cross bar 43 (support plate channel) or pivot 16A, 16 b (FIG.1A) are mounted to the upper end of scissor legs 15B, 15C to tilted andlowered best seen in FIG. 1 tilt-back-six wheeler position also whenelevated the lift table 10 it's provide lifting and tilting at the sametime also when lower the lift table provide tilting and lowered table10. The lift table 10 can be used as a number of function, as a tiltback hand truck, as a inclined lift table as a portable loading dock andused as a transporting cart. The device can be used for load and unloadboxes, plywood, glass, table and office partition also can be push byhand. The handrails 420 a and 420 b may be used for securing the loadfrom falling best seen in FIG. 4B. To unloading the load from lift table10 to van or truck adjust the extend rod 50 a little higher than van ortruck to provide an inclined for deck 11 then release the securing deckpin 221 with attach to bracket 220 welded to crossbar 42 b then unlockthe support plate lock 61 kick the support plate and approach lamp 49 tolowered position so that it rests on the van bed and move the load overthe approach lamp from deck 10 to the van is using a minimum affordedand man power also when unload from van to lift table 10 adjust extendleg 72 a, 72 b, (FIG. 1N) higher than rear deck to provide an inclinedthen rests the support plate on the van bed or truck bed then move theload to lift table 10 and lower the lift table 10 convert to tilt-backposition then lift cross bare 42 a or step on support plate 49 andconverted to hand truck position FIG. 3D then move load off supportplate 49. off the support plate 49.The extensible tilter device 40 canbe fold-in and fold-out between extend rod 50, micro adjust-stop pin 52to preside height or angle, convert from tilt-back position to platformposition (FIG. A1), to provide an inclined quickly roll loads on andoff, to use as a t-bar dolly bracket 44 also used as hand crank pusherwheel 48 (FIG. 3A), (FIG. 3C) electric pusher wheel (not shown)

[0071] In the embodiment of FIG. 1F The screw thread-driven liftassembly. The ball joint 38 a is welded to the left potion of thesupport arm 32 a and on the right side of support arm 32 a is attachedto the folding support arm 33 attach to hole 35 using bolt and nut 130a, 130 b, on both side also attached to the stop pin 36 a, 36 b, in theslot 37 a, 37 b both side to permit movement configuration 33, possiblerestrained by stop pin 36 (32 a, and 33 are the same axis) the supportarm 32 a is pivotally attached to right side of lift arm 32 b by boltedand nut 34 a, 34 b, (pivot axis) and on the left side of lift arm 32 bis welded to ball joint 38 b. A nut 121 attached by welded it to uppercenter of the bracket 122 and pivotally attached to top edge both sideof lift arm 32 b using a bolt and nut 123 a, 123 b, 124 a, 124 b. Asingle threaded shaft 39 is attached between nut 121 and hand crank gearassembly, when cranked 125 a is rotated, cause the arm 32 a 32 b tospread apart and raise the lift table 10 or drawn together causes tolowed the table. The hand crank assembly included gear bracket 126provided with coupling hole 131 for shaft 39 is attached with gear 129 aby welded and holes 127 a, 127 b, provided for shaft 125 b, is attachedto gear 129 b by welded also hand crank 125 a is coupling to shaft 125 band joint 125 c. the gear bracket is attached between top edge of thefolding support arm 33 to holes 132 a, 132 b, be attached by nuts andbolts 134 a, 134 b, 134 d, 134 f, also a single ball bearing is spacedbetween gear bracket 126 and crown gear 129 b respectively.

[0072] the depicted of embodiment of FIG. 11 the construction of thelift table 10 includes a flat loading surface or deck 11 may be madefrom wood, steel, fibreglass with or without rough surface. The deck 11is support by a plurality of cross bar 17, 41, 19 a 19 b and 19 c.longitudinal support frame 17 a, 17 b, and brackets 55 a, 55 b, providedwith holes 200 a, 200 b, 200 c, 200 d, located between cross bar 19 aand 41.the platform secure by pin 221 and secure blacket 220 welded onupper cross bar 42 b near upper portion of scissor leg 15 a. the deck 11are provided pockets 403 a, 403 b, 403 c, 403 d for stepladder 400 a andpockets 405 a, 405 b, 405 c, 405 d, for rails 420 a, 420 b, alsoprovided holes 601 a, 601 b, for head support 600.(403 a, and 403 b, canbe use for buget 500.

[0073] the lift table 10 includes a pivoted combination support plateand approach lamp 49 FIGS. 1J, 1L, 1M, 1T, can be removed from supportplate channel or front cross bar 43 by pressing on support plate lock 61is mounted by bolt 60 cause the spring 68 to collapsed then removed thesupport plate 49. On both the support plate 49 included support platerod holder 63 a, 63 b, be attached by clamps 64 a, 64 b, and welded tosupport plate 49 also stop 66 a, 66 b, welted to support plate 49 andspring 65 ,a 65 b, are spacing between rod 63 a, 63 b, and stop 66 a, 66b, to remove support plate 49 completely from support channel 43 thenpress rods 63 a, 63 b, and remove from support plate channel slot 69FIG. 1J. the support plate 49 can be swung upwardly when the lift tablelo is being transported or stored, the support plate 49 can be lowered,for engagement with the floor or dock FIGS. 1T, 3A, the lift table 10can be suspended in its lowered position by engagement with a stop 70 orshoulder welded to support plate 49 in FIGS. 1T, 3A, the support plate49 can be raised in to the elevated position and lock in to supportplate channel 63 as seen in FIG. 1B also can be used as standard handtruck two-wheeler or tilt-back six-wheeler when support plate 49 waslocked in channel 43 FIGS. 1A, 1l, 1M, the support plate 49 is availablein different sizes and some make for work buget (not shown).

[0074] In the embodiments depicted in FIGS. 1N and 1O a combinationextend legs and reinforce legs with wheels assembly are provided forcoupling to the lift table 10 by extend legs 72 a, 72 b, 72 c, 72 d, byinserting in lower end of scissors legs 15 a,15 b, 15 c, 15 d,Respectively. The lower end of scissors legs also included withadjust-stop pin and holes 81 a, 81 b, 81 c, 81 d, for adjusting high toextended legs 72 a, 72 b, 72 c, 72 d, and provided with holes 80 a, 80b, 80 c, 80 d 80 e, 80 f, 80 g, on each of the extended legs.

[0075] In FIGS. 1N, 1O, cross bar 73 a, are coupled by welding to wheelssupport shaft mounted to wheels members 75 a and 75 b, (only cross bar73 a equipped with wheels). cross bars pockets 74 a, 74 b, 74 c, 74 d,coupled by welding on top of cross bare 73 a, 73 b, pockets 74 a, 74 b,74 c, 74 d, included locking pins and holds 77 a, 77 b, 77 c, 77 d, theninserted upper cross bars with extend legs 72 a, 72 b, 72 c, 72 d, topockets 74 a, 74 b, 74 c, 74 d, and press locking pins 77 a, 77 b, 77 c,77 d, to seated in holes 79 a, 79 b, 79 c, 79 d, to locked cross bar 73a, 73 b. the extend legs 72 c, 72 d and cross bar 73 b when attachedtogether can be used as a stop help prevented the table 10 rolling awayalso can be extend in order to elevate one end of the lift table 10 isprovide an incline roller for fast load and unload.

[0076] In the embodiments depicted in FIGS. 1P, 1Q, the swivel wheelsassembly 16A, 16 b, are located on both side of lift table 10 whichincluded bracket 90A, 90 b, 91A, 91 b, and hub 86A, 80 b, are weldedtogether as shown, with shaft 85A, 85 b, welded to scissor leg 15B, 15c, and mounted to hub 86A, 86 b, and wheels 84A, 84B, 84 c,84 d, mountedto bracket 90A, 90 b, using nuts 88A, 88B, 88 c, 88 d, and bolts 87A,87B,87 c, 87 d, (the swivel wheels help cut down on weight instead ofusing lower frame with wheels assembly) also wheels may made of rubberalike or steel. The swivel wheels assembly 16 a and 16 b can be rotate180 degree to provide a stop prevented the table 10 rolling away.

[0077] In the embodiments depicted in FIGS. 1R, 1S, a pair of pivot pins12 a, 12 b, (12 b shown in FIG. 1D) are center of hinges 102 a, 102 b,and welded to lower portion of scissor legs 15 a, 15 d, and pivot pin 12a, 12 b, are welded to the lower portion of scissor legs 15 b, 15 c,bolted by nuts 104 a, 104 b, caused the pivot axis to be at lower potionof scissor leg provided the space for extend legs 72 a, 72 b, 72 c 72 d,make it possible to insert in square tube or reinforced the scissor legs15 a, 15 b, 15 c, 15 d,.

[0078] In the embodiments depicted in FIGS. 2A, 2B, the rear lift tablecross bar 41 mounted at bracket 55 pin 54 to extended is pivotally atone end to rod 50 extensible tilter device 40 (FIG. 1E) rested onbracket 51 b, pin 53 b and cross bar 42 b, the upper end of scissorslegs 15 a, 15 d, (FIG. 1A, device 40 rested on cross bar 42 a). when thelift table 10 raised the angle of support plate 49 and deck 11 rotateforward and upward at the time which defined by the angle and extendedof device 40 by selected holes 200 a, 200 b, 200 d, 200 d, on bracket 55a, 55 b, (D200 is tilting or decline more than A200) or adjustinglocking pin 52 also the extend leg can be used as tilter device orincline device.

[0079] In the embodiments of FIGS. 2C, 2D, 2E, 2F, are side view oftilt-back six wheeler, two wheeler hand truck and elevation of lifttable showing use thereof, as it used to loading and unloading box 200from truck bed 201.

[0080]FIG. 2C, showing the device lifting and transporting box 200, fromtruck bed 201.FIG. 2D, showing the device transformed to tilt-backsix-wheeler position to standard two-wheeler also transferred weight box201 to truck bed 200, used safety lock 202 is attach to truck bed set toprevent the support plate sliding away or tilting back ward. FIG. 2E,showing the lift table is extended scissor legs and wheels 16 a, 16 b,18 a, 18 b, also transformed platform 10 back to tilt-back position willrest on support surface, released safety lock 202, stepped on cross bar42 a, (on heavier load to prevented the lift table 10 tilting useextending legs 72 a and 72 b with cross bar 73 a move forward passcenter gravity of load) moved lift table 10 away from truck bed 200 andlowering the lift table 10 to tilted back position the lift table lo issecured in the desired angle. FIG. 2F showing the lift table lowered andin transporting. To load box 201 or lift table 10 on truck 200 reversethe procedure (2F, 2E, 2D, 2C,).

[0081] In the embodiment depicted in FIG. 3A, shown in the lift table 10lowered to the floor level, the support plate 49 be removed from supportplate channel 43 and lowered, for engagement with the floor (can be seenin FIG. 1T), the extensible tilter bare 40 attached to hand crank pusherwheel 48 FIG. 3C, with locking pin 302 and mounted to bracket 44, withlocking pin 303 or locking pin 53 a (bracket 51) in such a manner thatcranking the extensible bar 40 caused the lift table 10 and supportplate 49 moved forward in relation to the floor and be able to lift manystag of boxes 301 in one pass. In the embodiment of FIG. 3B, shown inthe lift table 10 in an elevated position ready to tilting and unloadedboxes 301 such as near a truck or van, an elevated loading dock, tiltingtable or loading pallet with out equipped with forks device.

[0082] In the embodiments depicted in FIGS. 3A, 3C, hand crank pusherwheel is comprised of wheel 310 welded one side to center of gear 309and attached to wheel support 311 by locking pin 303. On upper portionof wheel support 311 are provided with pocket 320 hole 316 and lockingpin 321 to attach extension 40. A pair of springs 318 a, 318 b, arehooked to lower edge of select lever 314 by hole 319 and the oppositeend is hooked to one way push mechanism 312. Both end are hooked toholes 317 a, 317 b,. The wheel support 311 is provided with pivot pin313 attaches to one way mechanism 312 and pivot pin 315 to select lever314, below pivot pin 315 is provided with pin stop select lever 340.Whenpush the select lever 314 to the left it will cause the spring 318 a topull the one way push mechanism 312 to tilt and lower the right sidewhich locking on gear 309 in such a manner that when cranking theextension 40 to the left causes the wheel 310 to rotated clock wise inone way to reverse push the select lever to the right side and crankextension 40 to light.

[0083] In the embodiment depicted in FIG. 3D shown in the hand truckusage condition or standard two wheeler. The support plate 49 locked inchannel 43.this achieves a minimum width therof between the rearwardsurfaces of the wheel member 18 a and 18 b witch can be stored in aminimum amount of space also can be stored in car trunk or used in sidehome and transform to step ladder FIG. 4A, scaffold FIGS. 4B, 2A, 2B,.

[0084] In the embodiments depicted of FIGS. 4A and 4b the lift table 10in used as a multi-purpose scaffold and stepladder position. Astepladder 400 a is coupled to the lift table 10 by coupling end 402 a,402 b insert in the upper deck pockets 43 a, 43 b and 43 c, 43 dstepladder 400 b is coupled to the lift table 10 by coupling end 402 d,seen in 1I and 1T are inserted in support channel 43 then rotated theswivel wheels 16 a, 16 b, 180 degree used as floor stop set to preventroll away also the ladders 400 and 400 b can be stored below theplatform assembly FIG. 4B, the lift table 10 in used as multi-purposescaffold position, with the extended legs 72 a, 72 b, 72 c, 72 d,inserted to scissor legs 15 a, 15 b, 15 c, 15 ,d and cross bar assembly73 a, 73 b, are attached to extended legs (FIG. 1N, 10,). A pair of handrails 420 a, 420 b, couple to the lift table lo by coupling end 404 a,404 b, 404 d, 404 e, insert in upper deck pockets 405 a, 405 b, 405 c405 d, respectively shown in 1I.

[0085] The device can be used in a number of functions, as a portableloading dock, for overhead maintenance or repair, for lifting load,tools, lumber. The operator may stand on the deck and ride it up to theproper elevation, ether under the control of an assistant or control bythe operator as he rides (re mode control device not shown).the deck canbe tiling parallel to ceiling, roof, pole or work piece for moreconvenient when repair. Another possible use is telescopic supports insure adaptation to any standing surface contour. Extensible andretractable climb-through apertures at the end of the platform permitsaft access to the scaffold movement surface.

[0086] In the embodiments depicted of FIGS. 5A, 5B, the buget 500 iscoupled to lift table 10 by coupling brackets 502 a, 502 b, welded toboth side of the buget, and inserted in upper deck pockets 403 a, 403 c,and bolted by 503 a, 503 b, to the front edge of buget 500 is weldedwith bracket 501 (FIGS. 1K, 1L,) and inserted to support plate channel43 locking by locked 61. Can be operate or function similar to FIGS. 2A,2B, FIG. 5b can be elevated and load or unload to the truck bed Workbuget allow you lower to the floor level, and let you low load on anoff. Design to position containers with part within fingertip reach ofassembly line workers and machine operator also eliminate bending andstretching required to remove component from deep basket and boxes.

[0087] In the embodiments depicted of FIGS. 6A, 6B, the lift table 10 islower to the floor level, the head rest 600 is coupled to platform 10 bycoupling pin 601 a, 601 b, inserting in hole 601 a, 601 b, to upperdeck. mechanic's deeper work as seat supports a worker an upright or setthe tool box at the same time also elevate tool box at desire level forwork condition, convenient with remote control and useful for businessand home. Can be incline support worker when working face down positionto reach where it's hart to get and easy to adjusting high when youwork.

[0088] In the embodiments of FIGS. 6C, 6D, the lift table 10 in used asa multi-purpose floor jack position. FIGS. 6c, shown the lift table tenin lowered to the floor level, the extension 610 is insert between liftarm 32 b and using top potion of the extension 610 to elevated andlifting at frame of vehicle or can be remove the lift arm 13 frombracket 34 c and 34 d by remove pin 611 from ball joint shaft. A floorjack of the type typically employed for automotive repair work which canload unload automotive parts, spare tires, raise and align the vehicleat the same time also portable, foldable, and light weight can fit incar trunk.

What is claim is:
 1. Combination lifting, platform, tilt back handtruck, scaffold, floor jack and mechanic's creeper; a platform frameassembly positioned above the wheels support assembly, all of saidplatform assembly being movable upwardly and downwardly in relation tosaid platform frame assembly; lift means connected to the wheel assemblyand to cross bar for lifting and lowering the entire platform frameassembly in relation to the wheels assembly; a single lift drive meansfor positioning said upper horizontal support means at desiredelevation, wherein said lift drive means is select from group consistingof a screw threaden, a hydraulic cylinder, a hydraulic actuator, a crewactuator, an electric motor, in an driven internal combustion motor; alinkage mean, different from said single lift drive mean coupling saidthe wheel support means to said to upper support mean; a platform frameassembly having one end pivotally connected to said extensible deviceand the second end attach to support plate and locking assembly; a wheelsupport assembly having one end pivotally connect to said extensibledevice; a platform frame assembly having first end pivotally connectedto extensible device and the second end pivotally connected to a linkagealso the other end of linkage having pivotally connected to extensibledevice provided triangle shape in the tilt back hand truck usagecondition;